JPS5497761A - Digital synchronous inspection mode - Google Patents

Digital synchronous inspection mode

Info

Publication number
JPS5497761A
JPS5497761A JP455578A JP455578A JPS5497761A JP S5497761 A JPS5497761 A JP S5497761A JP 455578 A JP455578 A JP 455578A JP 455578 A JP455578 A JP 455578A JP S5497761 A JPS5497761 A JP S5497761A
Authority
JP
Japan
Prior art keywords
making
output
phase difference
time
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP455578A
Other languages
Japanese (ja)
Other versions
JPS6016825B2 (en
Inventor
Eiichi Okamoto
Toshihisa Funahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Electric Manufacturing Co Ltd
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Meidensha Electric Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Electric Power Co Inc, Meidensha Electric Manufacturing Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP455578A priority Critical patent/JPS6016825B2/en
Publication of JPS5497761A publication Critical patent/JPS5497761A/en
Publication of JPS6016825B2 publication Critical patent/JPS6016825B2/en
Expired legal-status Critical Current

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  • Supply And Distribution Of Alternating Current (AREA)

Abstract

PURPOSE: To permit the making of breaker without fail at the time of zero phase difference, as well as permit a predetermined treatment by the digitization of electricity quantity from two power system which is to be synchronous closed circuit.
CONSTITUTION: The two system voltages V1 and V2 which are to be inspected with respect to synchronism are put in the phase arithmetic unit 1 to calculate the phase difference θo, and the output is introduced to the memory circuit 2 to memorize the time α alone. The divider 3 calculates θo/θα from the output θo of the phase difference arithmetic unit 1 and the output θα of the memory circuit 2, and the comparator 4 compares the θo/θα value with the constant K and if these agree with each other within a predetermined range, sends a break-making command. In this system, since synchronous inspection is made by making allowance for the frequencies of both systems, phase differece becomes zero without fail at the time of breaker making.
COPYRIGHT: (C)1979,JPO&Japio
JP455578A 1978-01-19 1978-01-19 Digital synchronous test method Expired JPS6016825B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP455578A JPS6016825B2 (en) 1978-01-19 1978-01-19 Digital synchronous test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP455578A JPS6016825B2 (en) 1978-01-19 1978-01-19 Digital synchronous test method

Publications (2)

Publication Number Publication Date
JPS5497761A true JPS5497761A (en) 1979-08-02
JPS6016825B2 JPS6016825B2 (en) 1985-04-27

Family

ID=11587285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP455578A Expired JPS6016825B2 (en) 1978-01-19 1978-01-19 Digital synchronous test method

Country Status (1)

Country Link
JP (1) JPS6016825B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154420U (en) * 1985-03-18 1986-09-25
JPS61291805A (en) * 1985-06-20 1986-12-22 Matsushita Electric Ind Co Ltd Combustion device

Also Published As

Publication number Publication date
JPS6016825B2 (en) 1985-04-27

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